gravvaard and resources and foerfarande foer its framstaellning

摘要

The stone (1) is cast in concrete containing a grindable and polishable stone material with a hardness less than or equal to grade 7 in accordance with the Mohs hardness scale. The stone material contains carbonates e.g. marble, with a degree of hardness 3 - 5 Mohs. Alternatively , it can contain silicates, e.g. feldspar, gneiss, leuzite with a degree of hardness 5 - 7 Mohs. The stone incorporates at least two metal tubes (4) preferably of stainless steel, and which receives the studs (3) on filment on the base (2). At least one name-plate (6) is incorporated and fitted on the free side of the stone.